Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dd5867859a2bd8f…

MALICIOUS

PDF

69.4 KB Created: 2021-02-25 03:16:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 01ff31a7b83bd4c23d2e8631ab8e83d5 SHA-1: 7059f2174041f2a872800c34a9468d652b4a2d5e SHA-256: 5dd5867859a2bd8fde6dbd538f262646c4ba6233107848cd2daf3b3cbec0abee
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://baarspo.ru/wix?keyword=circle+the+proper+noun+worksheet PDF link annotation
    • http://raisinshq.pro/how_to_spawn_a_helicopter_in_gta_v_pc1u358.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368488/normal_6009b70b68004.pdfIn PDF document text
    • http://madewithsunshine.com/14487594966r7owf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481695/normal_5fe055643c90d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421215/normal_5fcb107e9716d.pdfIn PDF document text
    • http://tularobumof.66ghz.com/6197267134.pdfIn PDF document text
    • http://instapriz365.online/intergovernmental_panel_on_climate_change_report_2018hlsdp.pdfIn PDF document text
    • http://fashion-deals.xyz/mezovimemotijikuragaga0qy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bogukap.rf.gd/19211375627.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/44628496133.pdfIn PDF document text
    • http://xavuguwibimovin.epizy.com/94351803689.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/frozen_movie_songs_ming.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/zeranuxovalomutafi.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/pufoxevefatupivopezuzo.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/decimal_to_fraction_practice_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/65316563579.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/tamil_actress_lakshmi_menon_photos.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/stack_on_gun_cabinet_lock_key.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A9 4872 bytes
SHA-256: 2b23f02e1f53be31f370b371e2bc7594bd24d0dbfa5a90eb675f4d349c4cd27b
font_01_sfnt_off0000e544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE544 10208 bytes
SHA-256: 61ec3da92fe2072100e4afeea9747447a2ff443aa938c011ed317b0911e255a0

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